The magnetic frustration in a quasi–one-dimensional organic
polymer is studied. The results show that if the frustrating
hopping is turned on, three ground-state phases are found: a
ferrimagnetic phase, two singlet phases. Two nearly degenerate
states with one sublattice forming spin singlet are also
discussed. The difference of phase diagrams between the present
Hubbard model and the Heisenberg model results from the
appearance of charge order in the Hubbard model. Due to the
frustration, the particle-hole symmetry in the single-particle
spectra is destroyed. The relation between the spectral functions
and the spin configurations are investigated for different phases.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.